Questions on electronics and communication engineering 3

E.C.E. Questions -3

The following questions depends upon Antenna and it's application

1. Give example of non-resonant antenna.
2. What is the Relationship between Beamwidth angle and Directivity?
3. Properties of a driven array.
4. Relationship between effective length and physical length.
5. Why we use a earthmat along with antenna?
6. The power gain of half wave array with respect to a isotropic radiater is?
7. When loop antenna is radiated through 360 degree, the induced voltage will experience?
8. The discone antenna can be used as a ?
9. The number of array in a simplest parasitic array is?
10. Why we use a counterpoise with the antenna?
11. Top loading of an antenna may be done by?
12. The input impedance of a folded dipole antenna is nearly?
13. Antenna normally preferred for low frequency transmission is?
14. An antenna behave as resonance circuit when?
15. What kind of pattern a half wave dipole Produced?
16. If the height of transmitter and receiver antennas are doubled, what will happen to the range of TV broadcast ?
17. How the electric field intensity of a Hertzian dipole at a remote point varies as?
18. What is the common use of loop antenna?
19. At what frequency a parabolic antenna is commonly used?
20. What is the radiation pattern of a parabolic antenna?

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